EP1574582A1 - Verfahren zur Herstellung von L-Aminosäuren unter Verwendung coryneformer Bakterien - Google Patents
Verfahren zur Herstellung von L-Aminosäuren unter Verwendung coryneformer Bakterien Download PDFInfo
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- EP1574582A1 EP1574582A1 EP05003969A EP05003969A EP1574582A1 EP 1574582 A1 EP1574582 A1 EP 1574582A1 EP 05003969 A EP05003969 A EP 05003969A EP 05003969 A EP05003969 A EP 05003969A EP 1574582 A1 EP1574582 A1 EP 1574582A1
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- gene
- coding
- tipa
- bacteria
- lysine
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Classifications
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- C—CHEMISTRY; METALLURGY
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- C12P13/00—Preparation of nitrogen-containing organic compounds
- C12P13/04—Alpha- or beta- amino acids
- C12P13/08—Lysine; Diaminopimelic acid; Threonine; Valine
Definitions
- L-amino acids in particular L-lysine
- L-lysine can be found in US Pat Human medicine and in the pharmaceutical industry, in the Food industry and especially in the Animal nutrition application.
- the protein concentration can also be detected by Western blot hybridization (et Sambrook al., Molecular Cloning: A Laboratory Manual, 2 nd Ed, Cold Spring Harbor Laboratory Press, Cold Spring Harbor, NY, 1989.) Having a specific for the protein to antibodies and subsequent optical evaluation with appropriate software for concentration determination (Lohaus and Meyer (1998) Biospektrum 5: 32-39; Lottspeich (1999) Angewandte Chemie 111: 2630-2647).
- the activity of DNA-binding proteins can be measured by DNA band-shift assays (also referred to as gel retardation) (Wilson et al., (2001) Journal of Bacteriology 183: 2151-2155).
- antisense technique Another method for specific reduction of Gene expression is the antisense technique, being short Oligodeoxy nucleotides or longer synthesis vectors antisense RNA are brought into the target cells.
- the Antisense RNA may be there at complementary sections bind specific mRNAs and reduce their stability or block the translatability.
- Srivastava et al. Applied Environmental Microbiology 2000 Oct; 66 (10): 4366-4371).
- Mutations are transitions, transversions, Insertions and deletions into consideration. In dependence of the effect of amino acid exchange on the Enzyme activity is mediated by missense mutations ("missense mutations ”) or non-nonsense mutations spoken. Insertions or deletions of at least lead to a base pair in a gene Frame shift mutations, in the consequence of which incorrect amino acids are incorporated or the Translation aborts prematurely. Deletions of several Codons typically result in a complete one Failure of enzyme activity.
- genes of C. glutamicum too mutate is that of Schwarzer and Pühler (Bio / Technology 9, 84-87 (1991)) method of gene disruption ("gene disruption”) and gene exchange (“gene replacement ").
- Plasmid vector cloned in a host typically E. coli
- a host typically E. coli
- vectors come from pSUP301 (Simon et al., Bio / Technology 1, 784-791 (1983)), pK18mob or pK19mob (Schäfer et al., Gene 145, 69-73 (1994)), pK18mobsacB or pK19mobsacB (Jäger et al., Journal of Bacteriology 174: 5462-65 (1992)), pGEM-T (Promega corporation, Madison, WI, USA), pCR2.1-TOPO (Shuman (1994).
- the measures of reinforcement in particular Overexpression, is the activity or concentration of the corresponding protein generally by at least 10%, 25%, 50%, 75%, 100%, 150%, 200%, 300%, 400% or 500%, at most up to 1000% or 2000% based on the wild-type protein or the activity or concentration of the protein in the initial microorganism increases.
- endogenous genes are generally prefers.
- endogenous genes or “endogenous Nucleotide sequences” are understood as those in the population a kind of existing genes or Nucleotide sequences.
- the culture medium to be used must be suitable meet the requirements of the respective strains. Descriptions of culture media of various Microorganisms are described in the manual "Manual of Methods for General Bacteriology” of the American Society for Bacteriology (Washington D.C., USA, 1981).
- nitrogen source organic nitrogen-containing Compounds such as peptones, yeast extract, meat extract, Malt extract, corn steep liquor, soybean meal and urea or inorganic compounds such as ammonium sulfate, Ammonium chloride, ammonium phosphate, ammonium carbonate and Ammonium nitrate can be used.
- the nitrogen sources can be used singly or as a mixture.
- phosphorus source can phosphoric acid, Potassium dihydrogen phosphate or dipotassium hydrogen phosphate or the corresponding sodium-containing salts are used.
- the culture medium must continue to salts of metals contained as e.g. Magnesium sulfate or iron sulfate, the necessary for growth. Finally, you can essential growth substances such as amino acids and vitamins in addition to the substances mentioned above.
- the culture medium may also contain suitable precursors be added.
- the stated feedstocks can be used for Culture added in the form of a unique approach or fed in a suitable manner during the cultivation become.
- to Foam processing control can use anti-foaming agents e.g. Fatty acid polyglycol esters are used.
- to Maintaining the stability of plasmids can the Medium suitable selective substances such. Antibiotics are added.
- To aerobic conditions maintain oxygen or oxygen Gas mixtures such as e.g. Air in the culture entered.
- the temperature of the culture is usually at 20 ° C to 45 ° C, and preferably at 25 ° C to 40 ° C.
- the Culture is continued until a maximum of desired product has formed. This goal will be usually within 10 hours to 160 hours reached.
- the amplified DNA fragment is cloned with TOPO TA Kit from Invitrogen Corporation (Carlsbad, CA, USA; Catalog number K4500-01) into the vector pCR2.1-TOPO (Mead at al. (1991) Bio / Technology 9: 657-663).
- Plasmid DNA is isolated from a transformant using the QIAprep Spin Miniprep Kit from Qiagen and checked by restriction with the restriction enzyme EcoRI and subsequent agarose gel electrophoresis (0.8%).
- the plasmid is called pCR2.1tipAint and is shown in FIG.
- the vector pCR2.1tipAint mentioned in Example 1 is electroporated into Corynebacterium glutamicum DSM 5715 according to the electroporation method of Tauch et al. (FEMS Microbiological Letters, 123: 343-347 (1994)).
- the strain DSM 5715 is an AEC-resistant lysine producer, the strain is described in EP-B-0435132.
- the vector pCR2.1tipAint can not self-replicate in DSM5715 and is only retained in the cell if it has integrated into the chromosome of DSM 5715.
- the selection of clones with integrated into the chromosome pCR2.1tipAint is carried out by plating out the electroporation batch on LB agar (Sambrook et al, Molecular Cloning. A Laboratory Manual, 2 nd Ed, Cold Spring Harbor Laboratory Press, Cold Spring Harbor, NY.), which has been supplemented with 15 mg / l kanamycin.
- DSM5715 A Selected Kanamycin Resistant Clone Encoding the In Example 1 called plasmid pCR2.1tipAint within the chromosomal tipA gene from DSM5715 has been inserted named DSM5715 :: pCR2.1tipAint.
- the pH is adjusted to pH 7.4 adjusted
- kanamycin 25 mg / l
- the preculture is incubated for 16 hours at 33 ° C at 240 rpm on the shaker. From this preculture, a major culture is seeded such that the initial OD (660 nm) of the major culture is 0.1 OD.
- the medium MM is used for the main culture.
- CSL, MOPS and saline are adjusted to pH 7 with ammonia water and autoclaved. Subsequently, the sterile substrate and vitamin solutions are added and the dry autoclaved CaCO 3 is added.
- the cultivation takes place in 10 ml volume in 100 ml Erlenmeyer flask with harassment. It will be kanamycin (25 mg / l) added. The cultivation takes place at 33 ° C and 80% Humidity.
- the OD becomes at a measuring wavelength of 660 nm with the Biomek 1000 (Beckmann Instruments GmbH, Kunststoff).
- the amount of lysine formed is with a Amino acid analyzer from Eppendorf-BioTronik (Hamburg, Germany) by ion exchange chromatography and post-column derivatization with ninhydrin detection certainly .
- FIG. 1 Map of the plasmid pCR2.1tipAint.
- the base pair numbers are Approximate values that are within the reproducibility of Measurements are obtained.
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Abstract
Description
- Corynebacterium glutamicum FERM-P 1709
- Brevibacterium flavum FERM-P 1708
- Brevibacterium lactofermentum FERM-P 1712
- Corynebacterium glutamicum FERM-P 6463
- Corynebacterium glutamicum FERM-P 6464 und
- Corynebacterium glutamicum DSM 5715.
- das für eine feed-back resistente Aspartatkinase kodierende Gen lysC (Accession No.P26512, EP-B-0387527; EP-A-0699759; WO 00/63388),
- gleichzeitig das für das Lysin-Export-Protein kodierende Gen lysE (DE-A-195 48 222),
- das für die Glyceraldehyd-3-Phosphat Dehydrogenase kodierende Gen gap (Eikmanns (1992). Journal of Bacteriology 174:6076-6086),
- das für die Pyruvat Carboxylase kodierende Gen pyc (EP-A-1083225),
- das für die Glucose-6-Phosphat Dehydrogenase kodierende Gen zwf (JP-A-09224661, WO 01/70995),
- das für die Malat:Chinon Oxidoreduktase kodierende Gen mqo (Molenaar et al., European Journal of Biochemistry 254, 395-403 (1998); EP-A-1038969),
- das für das Zwa1-Protein kodierende Gen zwa1 (DE: 19959328.0, DSM 13115; EP-A-1111062),
- das für die Triosephosphat Isomerase kodierende Gen tpi (Eikmanns (1992), Journal of Bacteriology 174:6076-6086),
- das für die 3-Phosphoglycerat Kinase kodierende Gen pgk (Eikmanns (1992), Journal of Bacteriology 174:6076-6086),
- das für die Dihydrodipicolinat-Synthase kodierende Gen dapA (EP-B 0 197 335),
- das für ein Katabolit-Kontroll-Protein A kodierende Gen ccpA1 (EP1311685),
- das für die Phosphoenolpyruvat-Carboxykinase kodierende Gen pck (DSM 13047, EP-A-1094111),
- das für die Glucose-6-Phosphat-Isomerase kodierende Gen pgi (DSM 12969, EP-A-1087015, WO 01/07626),
- das für die Pyruvat-Oxidase kodierende Gen poxB (DSM 13114, EP-A-1096013),
- das für die Fruktose-Bisphosphat Aldolase kodierende Gen fda (Mol. Microbiol. 3 (11), 1625-1637 (1989); ACCESSION Number X17313),
- das für das Zwa2-Protein kodierende Gen zwa2 (DSM 13113, EP-A-1106693),
- Escherichia coli Top10/pCR2.1tipAint als DSM 14816.
- Escherichia coli Top10/pCR2.1tipAint als DSM 14816.
Medium Cg III | |
NaCl | 2,5 g/l |
Bacto-Pepton | 10 g/l |
Bacto-Yeast-Extrakt | 10 g/l |
Glucose (getrennt autoklaviert) | 2% (w/v) |
eingestellt
Medium MM | |
CSL (Corn Steep Liquor) | 5 g/l |
MOPS (Morpholinopropansulfonsäure) | 20 g/l |
Glucose (getrennt autoklaviert) | 50g/l |
Salze: | |
(NH4)2SO4) | 25 g/l |
KH2PO4 | 0,1 g/l |
MgSO4 * 7 H2O | 1,0 g/l |
CaCl2 * 2 H2O | 10 mg/l |
FeSO4 * 7 H2O | 10 mg/l |
MnSO4 * H2O | 5,0mg/l |
Biotin (sterilfiltriert) | 0,3 mg/l |
Thiamin * HCl (sterilfiltriert) | 0,2 mg/l |
Leucin (sterilfiltriert) | 0,1 g/l |
CaCO3 | 25 g/l |
Stamm | OD (660 nm) | Lysin-HCl g/l |
DSM5715 | 8,2 | 13,6 |
DSM5715::pCR2.1tipAint | 10,5 | 15,1 |
- KmR:
- Kanamycin Resistenz-Gen
- EcoRI:
- Schnittstelle des Restriktionsenzyms EcoRI
- tipAint:
- internes Fragment des tipA-Gens
- ColE1:
- Replikationsursprung des Plasmides ColE1
Claims (11)
- Verfahren zur Herstellung von L-Aminosäuren durch Fermentation coryneformer Bakterien, dadurch gekennzeichnet, dass man Bakterien einsetzt, in denen man die für den Transkriptionsregulator TipA kodierende Nukleotidsequenz (tipA) abschwächt, insbesondere ausschaltet oder auf niedrigem Niveau exprimiert.
- Verfahren gemäß Anspruch 1, dadurch gekennzeichnet dass man L-Lysin herstellt.
- Verfahren zur Herstellung von L-Aminosäuren, insbesondere L-Lysin, dadurch gekennzeichnet, dass man folgende Schritte durchführt,a) Fermentation der die gewünschte L-Aminosäure produzierenden coryneformen Bakterien, in denen man zumindest das für den Transkriptionsregulator TipA kodierende Gen abschwächt,b) Anreicherung des gewünschten Produkts im Medium oder in den Zellen der Bakterien, undc) Isolierung der gewünschten L-Aminosäure, wobei gegebenenfalls Bestandteile der Fermentationsbrühe und/oder Biomasse in Anteilen oder in ihren Gesamtmengen im Endprodukt verbleiben.
- Verfahren gemäß Anspruch 1 oder 3, dadurch gekennzeichnet, dass man Bakterien einsetzt, in denen man zusätzlich weitere Gene des Biosyntheseweges der gewünschten L-Aminosäure verstärkt.
- Verfahren gemäß Anspruch 1 oder 3, dadurch gekennzeichnet, dass man Bakterien einsetzt, in denen die Stoffwechselwege zumindest teilweise ausgeschaltet sind, die die Bildung der gewünschten L-Aminosäure verringern.
- Verfahren gemäß Anspruch 1 oder 3, dadurch gekennzeichnet, dass man die Expression des Polynukleotids, das für den Transkriptionsregulator TipA kodiert, verringert.
- Verfahren gemäß Anspruch 1 oder 3, dadurch gekennzeichnet, daß man die regulatorischen Eigenschaften des Polypeptids (Enzymproteins) verringert, für das die Transkriptionsregulator TipA Nukleotidsequenz (tipA) kodiert.
- Verfahren gemäß Anspruch 1 oder 3, dadurch gekennzeichnet, dass man für die Herstellung von L-Lysin coryneforme Mikroorganismen fermentiert, in denen man gleichzeitig eines oder mehrere der Gene, ausgewählt aus der Gruppe8.1 das für eine feed-back resistente Aspartatkinase kodierende Gen lysC,8.2 das für den Lysin-Export kodierende Gen lysE,8.3 das für die Glyceraldehyd-3-Phosphat Dehydrogenase kodierende Gen gap,8.4 das für die Pyruvat Carboxylase kodierende Gen pyc,8.5 das für die Glucose-6-Phosphat Dehydrogenase kodierende Gen zwf,8.6 das für die Malat:Chinon Oxidoreduktase kodierende Gen mqo,8.7 das für das Zwa1-Protein kodierende Gen zwa1,8.8 das für die Triosephosphat Isomerase kodierende Gen tpi,8.9 das für die 3-Phosphoglycerat Kinase kodierende Gen pgk,8.10 das für die Dihydrodipicolinat-Synthase kodierende Gen dapA,
- Verfahren gemäß Anspruch 1 oder 3, dadurch gekennzeichnet, dass man zur Herstellung von L-Aminosäuren coryneforme Mikroorganismen fermentiert, in denen man gleichzeitig eines oder mehrere der Gene, ausgewählt aus der Gruppe9.1 das für ein Katabolit-Kontroll-Protein A kodierende Gen ccpA1,9.2 das für die Phosphoenolpyruvat-Carboxykinase kodierende pck-Gen,9.3 das für die Glucose-6-Phosphat Isomerase kodierende pgi-Gen,9.4 das für die Pyruvat-Oxidase kodierende Gen poxB,9.5 das für die Fruktose-Bisphosphat Aldolase kodierende Gen fda, oder9.6 das für das Zwa2-Protein kodierende Gen zwa2,
- Verfahren gemäß einem oder mehreren der Ansprüche 1-9, dadurch gekennzeichnet, daß man Mikroorganismen der Art Corynebacterium glutamicum einsetzt.
- Coryneforme Bakterien, in denen zumindest das für den Transkriptionsregulator TipA kodierende Gen abgeschwächt vorliegt.
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Application Number | Priority Date | Filing Date | Title |
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DE102004011248 | 2004-03-09 | ||
DE102004011248A DE102004011248A1 (de) | 2004-03-09 | 2004-03-09 | Verfahren zur Herstellung von L-Aminosäuren unter Verwendung coryneformer Bakterien |
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EP1574582A1 true EP1574582A1 (de) | 2005-09-14 |
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EP05003969A Withdrawn EP1574582A1 (de) | 2004-03-09 | 2005-02-24 | Verfahren zur Herstellung von L-Aminosäuren unter Verwendung coryneformer Bakterien |
Country Status (5)
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US (1) | US20050221454A1 (de) |
EP (1) | EP1574582A1 (de) |
CN (1) | CN1680564A (de) |
BR (1) | BRPI0500729A (de) |
DE (1) | DE102004011248A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7629142B2 (en) * | 2004-01-30 | 2009-12-08 | Ajinomoto Co., Inc. | L-amino acid-producing microorganism and method for producing L-amino acid |
Families Citing this family (9)
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KR100789272B1 (ko) | 2005-12-03 | 2008-01-02 | 씨제이 주식회사 | L-라이신 생산능이 향상된 코리네박테리움 속 미생물 및그를 이용하여 l-라이신을 생산하는 방법 |
KR100838038B1 (ko) * | 2006-12-29 | 2008-06-12 | 씨제이제일제당 (주) | L-라이신 생산능이 향상된 코리네박테리움 속 미생물 및그를 이용한 l-라이신 생산 방법 |
ES2383473T3 (es) * | 2007-11-20 | 2012-06-21 | Dsm Ip Assets B.V. | Producción de ácido dicarboxílico en eucariotas |
US8647642B2 (en) | 2008-09-18 | 2014-02-11 | Aviex Technologies, Llc | Live bacterial vaccines resistant to carbon dioxide (CO2), acidic PH and/or osmolarity for viral infection prophylaxis or treatment |
EP3404101A3 (de) * | 2011-12-21 | 2018-12-26 | Cj Cheiljedang Corporation | Verfahren zur herstellung von l-lysin mit mikroorganismen mit fähigkeit zur herstellung von l-lysin |
US11129906B1 (en) | 2016-12-07 | 2021-09-28 | David Gordon Bermudes | Chimeric protein toxins for expression by therapeutic bacteria |
US11180535B1 (en) | 2016-12-07 | 2021-11-23 | David Gordon Bermudes | Saccharide binding, tumor penetration, and cytotoxic antitumor chimeric peptides from therapeutic bacteria |
EP4194545A1 (de) * | 2020-08-07 | 2023-06-14 | Ningxia Eppen Biotech Co. Ltd | Rekombinanter stamm zur herstellung von l-aminosäure und herstellungsverfahren dafür und verwendung davon |
CN112063571B (zh) * | 2020-08-14 | 2022-05-06 | 廊坊梅花生物技术开发有限公司 | 高产l-氨基酸的工程菌及其构建方法与应用 |
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WO2002018596A1 (en) * | 2000-08-31 | 2002-03-07 | Degussa Ag | Citb gene from corynebacteria and use thereof in synthesis of l-amino acids |
DE10117816A1 (de) * | 2001-04-10 | 2002-10-17 | Degussa | Verfahren zur fermentativen Herstellung von L-Aminosäuren unter Verwendung coryneformer Bakterien |
DE10126164A1 (de) * | 2001-05-30 | 2002-12-05 | Degussa | Für das metD-gen kodierende Nukleotidsequenzen |
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US20020028490A1 (en) * | 1999-03-19 | 2002-03-07 | Douwe Molenaar | Process for the production of L-amino acids by fermentation using coryneform bacteria |
JP4526710B2 (ja) * | 1999-04-19 | 2010-08-18 | 協和発酵バイオ株式会社 | 新規な脱感作型アスパルトキナーゼ |
US6872553B2 (en) * | 1999-10-20 | 2005-03-29 | Degussa Ag | Nucleotide sequences which code for the pck gene |
DE19950409A1 (de) * | 1999-10-20 | 2001-04-26 | Degussa | Neue für das pck-Gen codierende Nukleotidsequenzen |
DE19959327A1 (de) * | 1999-12-09 | 2001-06-13 | Degussa | Neue für das zwa2-Gen codierende Nukleotidsequenzen |
DE19959328A1 (de) * | 1999-12-09 | 2001-06-13 | Degussa | Neue für das zwa1-Gen codierende Nukleotidsequenzen |
US7049106B2 (en) * | 2001-04-10 | 2006-05-23 | Degussa Ag | Process for the production of L-amino acids by fermentation using coryneform bacteria with an attenuated mqo gene |
-
2004
- 2004-03-09 DE DE102004011248A patent/DE102004011248A1/de not_active Withdrawn
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- 2005-02-24 EP EP05003969A patent/EP1574582A1/de not_active Withdrawn
- 2005-03-08 BR BRPI0500729-1A patent/BRPI0500729A/pt not_active Application Discontinuation
- 2005-03-08 US US11/074,025 patent/US20050221454A1/en not_active Abandoned
- 2005-03-09 CN CN200510054124.9A patent/CN1680564A/zh active Pending
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WO2002018596A1 (en) * | 2000-08-31 | 2002-03-07 | Degussa Ag | Citb gene from corynebacteria and use thereof in synthesis of l-amino acids |
DE10117816A1 (de) * | 2001-04-10 | 2002-10-17 | Degussa | Verfahren zur fermentativen Herstellung von L-Aminosäuren unter Verwendung coryneformer Bakterien |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7629142B2 (en) * | 2004-01-30 | 2009-12-08 | Ajinomoto Co., Inc. | L-amino acid-producing microorganism and method for producing L-amino acid |
US8383363B1 (en) | 2004-01-30 | 2013-02-26 | Ajinomoto Co., Inc. | L-amino acid-producing microorganism and method for producing L-amino acid |
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CN1680564A (zh) | 2005-10-12 |
US20050221454A1 (en) | 2005-10-06 |
BRPI0500729A (pt) | 2006-04-18 |
DE102004011248A1 (de) | 2005-09-22 |
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